That is your selector. Look closely at what you are telling to select. You are saying "Select all of the h1 elements in the .nav div." The trouble is that this exercise isn't expecting you to select the h1 elements, you don't even have any h1 elements in your nav div. -- Do you see what I mean? The exercise is asking you to select your li elements, not h1 elements so fix that first.

Next,

pywhiz55504:

airbnb logo display

That is not a valid CSS property. airbnb logo is not a CSS property. Out of those three words only display is CSS property.